A high-end job comes with a high-end price: Prepare to spend between $4,000 to $8,000. Some quotes are even as high as $20,000. High-end jobs often require the paint shop to use high-end paints, which may cost hundreds of dollars for a single quart.
Physical changes occur when objects or substances undergo a change that does not change their chemical composition. This contrasts with the concept of chemical change in which the composition of a substance changes or one or more substances combine or break up to form new substances.
There are two possible definitions for Physical and Chemical changes which I use in school: 1. A physical change is reversible, a chemical change is not. For example, the freezing of water would be a physical change because it can be reversed, whereas the burning of wood is a chemical change-you can't 'unburn' it 2. A physical change is a change in which no new substance is formed; a chemical change results in the formation of one or more new substances.